Bally, PA 19504 Frost Dates
Frost dates for Bally, PA, ZIP 19504
The last spring frost here typically falls around 04/20, about 235 days from today. The first fall frost typically arrives around 10/23, about 186 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bally, not a forecast for this year.
What to do before the first frost
Zone 6b around Bally has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Bally's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bally compares
About 186 days separate Bally's last and first frost, putting it 22,877 of 40,283 ZIP codes nationally. Within PA, it ranks 681 of 2,088.
Learn more
local microclimates explains what one yard in Bally can differ from the 19504 normal, and zone vs. frost date explains why Zone 6b and Bally's frost date answer different questions.